1. @ma$hewhaworth

2. SSH@ma$hewhaworth

3. Make use of SSH
config
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4. SSH Config file
# ~/.ssh/config
Host myclient-dev
HostName dev.example.com
Port 2020
User myclientu
IdentityFile ~/.ssh/id_rsa
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5. SSH Config file
# ~/.ssh/config
Host myclient-dev
HostName dev.example.com
Port 2020
User myclientu
IdentityFile ~/.ssh/id_rsa
$ ssh myclient-dev
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6. Use screen
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7. screen
Start terminal sessions that you can
disconnect from and resume at any
3me.
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8. Screen Cheatsheet
# Create and name a new screen session
$ screen -S <name>
# Detach from screen (but keep it alive)
$ Ctrl+a d
# Resume a named session
$ screen -r <name>
# List active sessions
$ screen -ls
# Catch all (use existing, or create new)
$ screen -dRR
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9. Escape a dead
SSH connec-on
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10. Enter ~ .
Kills a dead SSH session and lets you
keep your terminal
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11. Files@ma$hewhaworth

12. Tricks to ge,ng
around
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13. This makes me want to kill you
$ cd app
$ cd code
$ cd MyVendor
$ cd MyModule
$ cd etc
$ cd ../../..
$ cd ..
$ cd ..
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14. This is much nicer
$ cd app/code/MyVendor/MyModule/etc
$ cd -
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15. Using tar for archiving and compression
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16. Tar
tar czf myarchive.tar.gz <files>
c - Create new archive
z - Zip
f - Filename
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17. @ma$hewhaworth

18. T-arghh!
$ tar czf magento_backup.tar.gz <files>
c - Create
z - Ze
f - Files
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19. T-arghh!
$ tar czf magento_backup.tar.gz <files>
c - Create
z - Ze
f - Files
$ tar xzf magento_backup.tar.gz
x - eXtract
z - Ze
f - Files
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20. A bit more on tar
# Extract to specific directory
$ tar xf magento_ce.tar.gz -C myDirectory
# Only extract a particular file
$ tar xf magento_ce.tar.gz magento
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21. mkdir magic
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22. mkdir magic
-p allows you to create children and parents at the
same 4me
# Verbose
$ mkdir app && mkdir app/code && mkdir app/code/MyModule
# Better
$ mkdir -p app/code/MyModule
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23. mkdir magic
Using {} allows you to create mul4ple directories at
once
$ mkdir -p app/code/MHCommerce/{ShippingMethods,Checkout}/{Block,Model,etc}
└── app
└── code
└── MHCommerce
├── Checkout
│ ├── Block
│ ├── Model
│ └── etc
└── ShippingMethods
├── Block
├── Model
└── etc
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24. tree
$ brew install tree
$ tree
└── app
└── code
└── MHCommerce
├── Checkout
│ ├── Block
│ ├── Model
│ └── etc
└── ShippingMethods
├── Block
├── Model
└── etc
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25. Keeping an eye on files
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26. less and Shift + F
Browse file and s-ck to the bo3om
$ less var/log/system.log
[Shift + F]
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27. tail -f
Print end of file to standard out
# Prints last ten lines to standard out
$ tail var/log/system.log
# Prints the end of the file continuously
$ tail -f var/log/system.log
# Print last x lines
$ tail -f -n20 var/log/system.log
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28. watch
Con$nuously execute a command
$ brew install watch
$ watch -n[update_interval] "[command]"
$ watch -n1 "cat var/log/system.log"
$ watch -n0.1 "ls -lsah"
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29. Other useful file based commands
- grep - Filter lines in a file
- sed - Find and replace on a file
- awk - More complex text manipulation
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30. Processes
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31. Keeping processes
quiet
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32. Background Processes with &
$ tar czf backup.tar.gz magento &
[1] 13281
$ jobs
[1] + running tar czf backup.tar.gz magento
# some time later ...
[1] + 13281 done tar czf backup.tar.gz magento
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33. Hal$ng Processes
$ tar czf backup.tar.gz magento
[Ctrl + z]
[1] + 13552 suspended tar czf backup.tar.gz magento
$ bg
[1] + 13552 continued tar czf backup.tar.gz magento
$ jobs
[1] + running tar czf backup.tar.gz magento
$ fg
[1] + 13613 running tar czf backup.tar.gz magento
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34. Hal$ng SSH
SSH is just another process, it can be halted and
resumed in the same way
$ ssh my-client-staging
my-client-staging $
Enter + ~ then [Ctrl + z]
[1] + 13702 suspended ssh my-client-staging
$ fg
[1] + 13702 continued ssh my-client-staging
my-client-staging $ ls #...
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35. Pipe viewer
View the progress of pipe'd input
$ brew install pv
$ pv db.sql | mysql -uroot my_client_db
178MiB 0:00:38 [17.9MiB/s] [==========> ] 60% ETA 0:00:28
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36. Other useful process based commands
- top - See a process list
- htop - See a colourful and more interactive process list
- ps - Print out processes to std out, use `ps aux`
- kill - Kill a process by id
- killall - Kill all processes with a certain name
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37. Shortcuts
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38. Forgot sudo? Lazy?
$ service mysql restart
Permission denied
$ sudo !!
MySQL restarted
# equivalent to...
$ sudo service mysql restart
MySQL restarted
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39. Already wri+en a file path once? Lazy?
$ ls -lash app/etc/env.php
$ vim !$
# equivalent to...
$ vim app/etc/env.php
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40. Want to pull in a command from history?
$ history
...
1028 ls -lash
1029 vim app/etc/local.xml
1030 rm app/etc/local.xml
# Re-run command 1028
$ !1028
OR
[Ctrl + r] allows you to search through previous commands
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41. Wri$en a command that's star1ng to
get too long?
[Ctrl + x] [Ctrl + e]
This will open a text editor containing the command
you currently have wri7en on the command line
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42. Further Reading
Mac users
---------
- https://brew.sh/ - Homebrew
- https://github.com/robbyrussell/oh-my-zsh
All Unix
--------
- http://www.commandlinefu.com/
- https://github.com/learnbyexample/
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43. Thank you!
Specifically those who suffered my prac5ce runs...
Sam Beckingham-Cook: @SamboBeckingham
Lee Frankland: @leefrankland
Lissie Cox: @LissieCox
Phil Turner: @FlipTurner
Vinai Kopp: @VinaiKopp
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